3 # Copyright (C) 2006 Paul Mackerras, IBM Corporation <paulus@samba.org>
4 # This program may be used under the terms of version 2 of the GNU
5 # General Public License.
7 # This script takes a kernel binary and optionally an initrd image
8 # and/or a device-tree blob, and creates a bootable zImage for a
12 # -o zImage specify output file
13 # -p platform specify platform (links in $platform.o)
14 # -i initrd specify initrd file
15 # -d devtree specify device-tree blob
16 # -s tree.dts specify device-tree source file (needs dtc installed)
17 # -c cache $kernel.strip.gz (use if present & newer, else make)
18 # -C prefix specify command prefix for cross-building tools
19 # (strip, objcopy, ld)
20 # -D dir specify directory containing data files used by script
21 # (default ./arch/powerpc/boot)
22 # -W dir specify working directory for temporary files (default .)
24 # Stop execution if any command fails
27 # Allow for verbose output
43 # cross-compilation prefix
46 # mkimage wrapper script
47 MKIMAGE=$srctree/scripts/mkuboot.sh
49 # directory for object and other files used by this script
50 object=arch/powerpc/boot
54 # directory for working files
58 echo 'Usage: wrapper [-o output] [-p platform] [-i initrd]' >&2
59 echo ' [-d devtree] [-s tree.dts] [-c] [-C cross-prefix]' >&2
60 echo ' [-D datadir] [-W workingdir] [--no-gzip] [vmlinux]' >&2
64 while [ "$#" -gt 0 ]; do
68 [ "$#" -gt 0 ] || usage
73 [ "$#" -gt 0 ] || usage
78 [ "$#" -gt 0 ] || usage
83 [ "$#" -gt 0 ] || usage
88 [ "$#" -gt 0 ] || usage
96 [ "$#" -gt 0 ] || usage
101 [ "$#" -gt 0 ] || usage
107 [ "$#" -gt 0 ] || usage
117 [ -z "$kernel" ] || usage
124 if [ -n "$dts" ]; then
125 if [ ! -r "$dts" -a -r "$object/dts/$dts" ]; then
126 dts="$object/dts/$dts"
128 if [ -z "$dtb" ]; then
131 $dtc -O dtb -o "$dtb" -b 0 "$dts"
134 if [ -z "$kernel" ]; then
138 platformo=$object/"$platform".o
139 lds=$object/zImage.lds
142 tmp=$tmpdir/zImage.$$.o
143 ksection=.kernel:vmlinux.strip
144 isection=.kernel:initrd
145 link_address='0x400000'
149 platformo=$object/of.o
150 link_address='0x4000000'
153 platformo=$object/of.o
156 platformo=$object/of.o
157 lds=$object/zImage.coff.lds
158 link_address='0x500000'
161 # miboot and U-boot want just the bare bits, not an ELF binary
172 *-mpc866ads|*-mpc885ads|*-adder875*|*-ep88xc)
173 platformo=$object/cuboot-8xx.o
176 platformo=$object/cuboot-52xx.o
178 *-pq2fads|*-ep8248e|*-mpc8272*|*-storcenter)
179 platformo=$object/cuboot-pq2.o
182 platformo=$object/cuboot-824x.o
185 platformo=$object/cuboot-83xx.o
187 *-tqm8541|*-mpc8560*|*-tqm8560|*-tqm8555|*-ksi8560*)
188 platformo=$object/cuboot-85xx-cpm2.o
190 *-mpc85*|*-tqm85*|*-sbc85*)
191 platformo=$object/cuboot-85xx.o
194 link_address='0x800000'
199 platformo="$object/ps3-head.o $object/ps3-hvcall.o $object/ps3.o"
200 lds=$object/zImage.ps3.lds
203 objflags="-O binary --set-section-flags=.bss=contents,alloc,load,data"
204 ksection=.kernel:vmlinux.bin
205 isection=.kernel:initrd
208 ep88xc|ep405|ep8248e)
209 platformo="$object/fixed-head.o $object/$platform.o"
213 platformo="$object/fixed-head.o $object/redboot-8xx.o"
216 simpleboot-virtex405-*)
217 platformo="$object/virtex405-head.o $object/simpleboot.o $object/virtex.o"
220 simpleboot-virtex440-*)
221 platformo="$object/fixed-head.o $object/simpleboot.o $object/virtex.o"
225 platformo="$object/fixed-head.o $object/simpleboot.o"
229 platformo="$object/fixed-head.o $object/redboot-83xx.o"
233 link_address='0x1400000'
234 platformo=$object/cuboot-85xx.o
237 link_address='0x600000'
238 platformo="$object/$platform-head.o $object/$platform.o"
242 vmz="$tmpdir/`basename \"$kernel\"`.$ext"
243 if [ -z "$cacheit" -o ! -f "$vmz$gzip" -o "$vmz$gzip" -ot "$kernel" ]; then
244 ${CROSS}objcopy $objflags "$kernel" "$vmz.$$"
246 if [ -n "$gzip" ]; then
250 if [ -n "$cacheit" ]; then
251 mv -f "$vmz.$$$gzip" "$vmz$gzip"
259 # Extract kernel version information, some platforms want to include
260 # it in the image header
261 version=`${CROSS}strings "$kernel" | grep '^Linux version [-0-9.]' | \
263 if [ -n "$version" ]; then
264 uboot_version="-n Linux-$version"
267 # physical offset of kernel image
268 membase=`${CROSS}objdump -p "$kernel" | grep -m 1 LOAD | awk '{print $7}'`
273 ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a $membase -e $membase \
274 $uboot_version -d "$vmz" "$ofile"
275 if [ -z "$cacheit" ]; then
283 ${CROSS}objcopy $4 $1 \
284 --add-section=$3="$2" \
285 --set-section-flags=$3=contents,alloc,load,readonly,data
288 addsec $tmp "$vmz" $ksection $object/empty.o
289 if [ -z "$cacheit" ]; then
293 if [ -n "$initrd" ]; then
294 addsec $tmp "$initrd" $isection
297 if [ -n "$dtb" ]; then
298 addsec $tmp "$dtb" .kernel:dtb
299 if [ -n "$dts" ]; then
304 if [ "$platform" != "miboot" ]; then
305 if [ -n "$link_address" ] ; then
306 text_start="-Ttext $link_address --defsym _start=$link_address"
308 ${CROSS}ld -m elf32ppc -T $lds $text_start -o "$ofile" \
309 $platformo $tmp $object/wrapper.a
313 # Some platforms need the zImage's entry point and base address
314 base=0x`${CROSS}nm "$ofile" | grep ' _start$' | cut -d' ' -f1`
315 entry=`${CROSS}objdump -f "$ofile" | grep '^start address ' | cut -d' ' -f3`
317 if [ -n "$binary" ]; then
318 mv "$ofile" "$ofile".elf
319 ${CROSS}objcopy -O binary "$ofile".elf "$ofile"
322 # post-processing needed for some platforms
325 $objbin/addnote "$ofile"
328 ${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
329 $objbin/hack-coff "$ofile"
333 ${MKIMAGE} -A ppc -O linux -T kernel -C gzip -a "$base" -e "$entry" \
334 $uboot_version -d "$ofile".gz "$ofile"
337 mv "$ofile" "$ofile.elf"
338 $objbin/mktree "$ofile.elf" "$ofile" "$base" "$entry"
339 if [ -z "$cacheit" ]; then
345 # The ps3's loader supports loading a gzipped binary image from flash
346 # rom to ram addr zero. The loader then enters the system reset
347 # vector at addr 0x100. A bootwrapper overlay is used to arrange for
348 # a binary image of the kernel to be at addr zero, and yet have a
349 # suitable bootwrapper entry at 0x100. To construct the final rom
350 # image 512 bytes from offset 0x100 is copied to the bootwrapper
351 # place holder at symbol __system_reset_kernel. The 512 bytes of the
352 # bootwrapper entry code at symbol __system_reset_overlay is then
353 # copied to offset 0x100. At runtime the bootwrapper program copies
354 # the data at __system_reset_kernel back to addr 0x100.
356 system_reset_overlay=0x`${CROSS}nm "$ofile" \
357 | grep ' __system_reset_overlay$' \
359 system_reset_overlay=`printf "%d" $system_reset_overlay`
360 system_reset_kernel=0x`${CROSS}nm "$ofile" \
361 | grep ' __system_reset_kernel$' \
363 system_reset_kernel=`printf "%d" $system_reset_kernel`
367 ${CROSS}objcopy -O binary "$ofile" "$ofile.bin"
369 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
370 skip=$overlay_dest seek=$system_reset_kernel \
371 count=$overlay_size bs=1
373 dd if="$ofile.bin" of="$ofile.bin" conv=notrunc \
374 skip=$system_reset_overlay seek=$overlay_dest \
375 count=$overlay_size bs=1
377 odir="$(dirname "$ofile.bin")"
378 rm -f "$odir/otheros.bld"
379 gzip --force -9 --stdout "$ofile.bin" > "$odir/otheros.bld"